Fig. 4. Change in trajectories of ants with restricted training. (A) The trajectories of ants (N=30) during the final training run (left) and in probe trials after the food position has been switched to F2. Paths are grouped by initial heading (F1, intermediate and F2, respectively). A barrier (Fig. 1B) prevented access to the white region of the arena during post-switch training runs. (B) As in Fig. 2B, trajectories are categorised by their initial heading and grouped by run number. The groups contain 29, 40, 41 and 53 trajectories, respectively. (C) Distribution of initial headings for all probe trials after the switch (N=30; n=153).